College graduates, on average, could make $300,000 more over the course of their careers than non-college graduates, and that factors into the cost of a college degree.

Still, the college cost issue is virtually screaming for a common-sense solution, one that provides affordable college tuition tied to some sort of repayment plan that doesn't break the bank for college graduates.

But there is a repayment component, and it's creative, if nothing else. Instead of paying back a loan, Oregon public university graduates pay about 3% of their career earnings for 25 years after graduation.

Call it the "venture capital" college cost experience.

Just like a venture investor who bets on a specific company to turn into the next Apple or Federal Express , Oregon is betting its college graduates will flourish in the business world and easily cover the 3% of their annual pay for a full quarter-century.

How does the proposed deal look from a cash perspective? Consider a college graduate who earns $600,000 over approximately 25 years (not a huge annual salary.) At a 3% repayment rate, the cost of that college education in Oregon would cost $18,000.

But what about a grad who cashes in on his or her career and earns $1 million over 25 years? That's going to cost $30,000 in college repayments, giving Oregon a big return on its investment. Oregon is essentially gambling that its investment will be covered by financial overachievers who out-earn their peers in their first 25 years out of college.

State universities co-operating with the Oregon plan have some skin in the game. If they keep producing dropouts or graduates who don't work full time after graduation and earn a healthy income, the state doesn't get a "return" on its investment, leading potentially to a collapse of the entire system.

So Oregon public universities will need to bolster their curriculums and produce consistent success stories, at least as defined by salary, out of their college populations.

The proposed pilot program, called Pay It Forward, has cleared the Oregon Legislature but is not expected to roll out officially for several years.

The plan will require some upfront money from the state, which has been approved by Oregon pols. Over the long term, it's the salaries of college graduates that will sustain Pay It Forward.